Lessons on next 8-9 May are posponed. Scheduled lessons will be on 14-15-16, and 22-23 May. On 14 May 2 PM, two worker sudents will present their 2 test in a seminar way. All the other students are invited to discussion. The room number will be noticed at soon as possible. On 15-16 May, the class will begin inividual or per group presentations. Students are invited to program and organize their work and PPT presentations.